LG 42CS669C-ZD - Manuals - manualsarea.com

Page 2 - LGE Internal Use Only; CONTENTS

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 2 - CONTENTS CONTENTS .............................................................................................. 2 PRODUCT SAFETY .................................................

Page 3 - SAFETY PRECAUTIONS; General Guidance; isolation Transformer should always be used; Before returning the receiver to the customer,; AC leakage current check; Leakage Current Cold Check(Antenna Cold Check); Do not use a line Isolation Transformer during this check.; Leakage Current Hot Check circuit; When 25A is impressed between Earth and 2nd Ground; IMPORTANT SAFETY NOTICE

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in theSchematic Diagram and E...

Page 4 - SERVICING PRECAUTIONS

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 4 - CAUTION: Before servicing receivers covered by this servicemanual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: I...

Page 5 - IC Remove/Replacement; Removal; Diode Removal/Replacement; At IC Connections

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 5 - IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) throughwhich the IC leads are inserted and then bent flat against thecircuit foil. When holes are ...

Page 6 - SPECIFICATION; Requirement for Test; Each part is tested as below without special appointment.; Model General Specification

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 6 - SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to the LCD TV used LD0AW...

Page 9 - ADJUSTMENT INSTRUCTION; Main PCB check process

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 9 - ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LCD TV withLD0AW chassis. 2. Designation 1) The adjustment is according to the ord...

Page 10 - download

* After downloading, have to adjust Tool Option again. (1) Push “IN-START” key in service manual control.(2) Select ‘Tool Option 1’ and push ‘OK’ key.(3) Punch in the number. (Each models has their number.)(4) Correction Tool option is completed. 3.1. ADC Process • Enter ‘EZ ADJUST’ mode by pushing ...

Page 11 - Total Assembly line process; * Connecting picture of the measuring instrument

3.4. Function Check (1) Check display and sound - Check Input and Signal items. (cf. work instructions) 1) TV2) AV3) COMPONENT1/2 (480i)4) RGB (PC : 1024 x 768 @ 60hz)5) HDMI6) PC Audio In * Display and Sound check is executed by remote control. <Caution> Not to push the INSTOP key after compl...

Page 14 - TROUBLESHOOTING

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 14 - 1. Power-up boot check TROUBLESHOOTING Check stand-by Voltage. P403 9~12pin : +3.5V_ST Check Power connector. Main B/D 3.5V Line Short Check Check X201 clock. 24 MHz Replace X...

Page 17 - ok; ok

- 17 - LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes 6. SCART Video Check input signal format. Is it supported? Check Component Cable for damage or open conductor. Check JK1602 R/G/B and sync signal Line. ok ok ok No Replace Jac...

Page 22 - BLOCK DIAGRAM; LVDS; Rear; IC; Option; CI Slot

LGE Internal Use Only Copyright ©2012 LG Electronics. Inc. All right reserved. Only for training and service purposes - 22 - BLOCK DIAGRAM RGB PC SPDIF Component1 H/P OUT HDMI1/2(DVI) S I2176 S I2176 (LG IT) (LG IT) PC/DVI A udi In RS-232 C IF +/- TU_CVBS SIF L/R S7LR IC101 M A X 323 2 M A X 323 2 S...

Page 23 - EXPLODED VIEW

- 23 - LGE Internal Use Only Copyright LG Electronics. Inc. All right reserved. Only for training and service purposes 900 300 200 800 400 540 521 530 810 910 120 51 1 510 LV 1 A2 A4 A10 * Set + Stand * Stand Base + Body EXPLODED VIEW Many electrical and mechanical parts in this chassis have special...

Page 24 - Only for training and service purposes

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 25 - M A I N 2 , H W O P T; N o r m a l 2 . 5 V

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 26 - P O W E R _ L A R G E; F R O M L I P S & P O W E R B / D; P A N E L _ P O W E R; S 7 L R c o r e 1 . 2 V v o l t

T H E R M A L THERMAL THERMAL T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S ...

Page 27 - C O N T R O L

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 28 - G P 2 R

U S B D O W N S T R E A M USB DOWN STREAM T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S ...

Page 29 - H D M I

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 30 - E A R P H O N E B L O C K; N e w I t e m D e v e l o p m e n t

F i b e r O p t i c T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C ...

Page 34 - S F L A S H

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 35 - T U N E R M U L T I - O P T I O N

THERMAL T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I ...

Page 37 - F u l l S c a r t / C o m p 1; R e a r A V; C O M P O N E N T 2

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 39 - P C M C I

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...

Page 40 - S M D G A S K E T

T H E S Y M B O L M A R K O F T H I S S C H E M E T I C D I A G R A M I N C O R P O R A T E SS P E C I A L F E A T U R E S I M P O R T A N T F O R P R O T E C T I O N F R O M X - R A D I A T I O N .F I L R E A N D E L E C T R I C A L S H O C K H A Z A R D S , W H E N S E R V I C I N G I F I S E S S ...